Flood Risk in San Diego, CA
Risk Level: Extreme — Score 9/10
Live Flood alert status near San Diego
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Live flood map around San Diego
Shows flood warnings and events that are active right now, refreshed through the day. When none are active, the map is empty by design.
Key Risk Factors
- FEMA rates San Diego's county as Very High risk for this hazard
- Estimated annual loss of $648M from this hazard type
- Frequent historical activity recorded in proximity
- High recent activity — multiple events in the 12 months to Aug 9, 2026
- Average annual frequency: 7.9 events per year
Peak season: March-September
Last significant event: Flood Forecast - San Diego, United States (2026-01-02) — 538,000 people exposed
Highest Risk Cities for Floods
How San Diego Compares
Notable Flood Events Near San Diego
DisasterAWARE's historical archive records 5 notable flood events near San Diego, ranked below by impact. The most impactful: Flash Flood - San Diego, California, United States (January 2026) — 2,140,000 people exposed; $582,824M capital exposed.
Flash Flood - San Diego, California, United States
January 1, 2026 — WARNING
2,140,000 people exposed; $582,824M capital exposed
Flood - San Diego, CA Region, United States
February 6, 2024 — WARNING
1,100,000 people exposed; $276,416M capital exposed
Flood Forecast - San Diego, California, United States
January 1, 2026 — WARNING
538,000 people exposed; $143,969M capital exposed
Flood Forecast - San Diego, United States
January 2, 2026 — ADVISORY
538,000 people exposed; $143,969M capital exposed
Flood - San Diego, CA Region, United States
December 5, 2019 — WARNING
Impact data not available
Flood Preparedness Tips
- 1.Know if your property is in a flood zone — check FEMA maps
- 2.Consider flood insurance even if not in a high-risk zone
- 3.Never drive through flooded roadways — Turn Around, Don’t Drown
- 4.Move valuables and important documents to upper floors
- 5.Install sump pumps and check valves in plumbing
Related Pages
How this data is built
San Diego, CA flood risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live flood monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.
The data behind this page
Every score and event here comes from DisasterAWARE's hazard database — available as downloadable historical datasets and a real-time API.
Monitor Flood Risk in Real Time
Get real-time flood alerts for San Diego, CA and hundreds of other locations with DisasterAWARE's enterprise platform.